Leakage-stopper for a hose



Nov. 9, 1937. E. TAMADA 9 LEAKAGE STOPPER FOR A HOSE Filed July 16, 1935 2 SheetS -Sheet l 3-. dam/c;

Nov. 9, 1937. E. TAMADA 2,098,556

LEAKAGE STOPPE R FOR A HOSE Filed July 16, 1955 2 Sheets-Sheet 2 nuunnnnnununnuuuunntint 5 JWWZCL Patented Nov, 9, 1937 assassi- PATENT or ies 2,098,556 LEAKAGE-STOPPER FOR A HOSE Eizo Tamada, Itoigawa-cho, Nishikubiki-gun,

Niigata-ken, Japan 7 Application July 16, 1935, Serial No. 31,692

In Japan Claims. (01; 1384):

The present invention relates to a leakagestopper for a hose.

The object of this invention is to provide an inexpensive leakage-stopper capable, with prompti- 5 tude and ease, of tightly sealing a hole resulting from breakage in a hose, irrespective of its being used or not.

A-further object of this invention is to provide a leakage-stopper having such a construction as 10. not likely to get distorted or broken even when struck against one another during transit of large quantities in a case, and as to be applicable with utmost certainty of the stopper holding itself firmly in its place while pressing, from both sides,

that part of hose around the hole, thus insuring perfect stoppage of leakage, and likewise appli-, cable with ease in stopping a. comparatively small ole.

A further object of this invention is to provide v a leakage-stopper having such a construction as to be provided with a tip in the form of an awl for enlarging the hole, which tip is attached to the stopper in such a manner that it is automatically detached upon the leakage being stopped and is carried away by the waterflow in the hose, so. that there is no need of using a special device (a knife or an awl) for enlarging the hole to a required size, which otherwise is needed when applying the stopper to a small hole.

The accompanying drawings illustrate the em bodiment of this invention, in which,

Fig. 1 is a front view of the leakage-stopper;

Fig. 2is a'partial longitudinal sectional front view of the same;

Fig. 3 is a front View of the same when the stem is partly pulled out;

Fig. 4 is a longitudinal sectional front view of same when it has been applied to the hole, stopping the leakage;

Fig. 5 is a plan of same when viewed from the inner surface of hose after it has been applied to the hole, stopping the leakage;

Figs. 6 to 8 show a modification of same, Fig. 6 being a plan of the modification;

5 Fig. 7 is a partial longitudinal sectional plan of same;

Fig. 8 is a longitudinal sectional View of same when it has been applied to the hole, stopping the leakage;

50 Figs. 9 and 10 show a further modification of same, Fig. 9 being a plan;

Fig. 10 is a longitudinal sectional view of the modification;

Figs. 11 and 12 show a leakage-stopper as 55 shown by the Figs. 1 to 5 having been attached,

by way of an example, with a tip in the form of an awl for enlarging a hole in the hose, Fig. 11 being a longitudinal sectional front view of the leakage-stopper;

Fig. 12 is a perspective View of awl. 5

Referring to the drawings in detail, I shows a tubular body of the leakage-stopper made of metal, copper for example, having several slits running longitudinally from the upper end to the lower end in such a manner that several 10 strips 2 .are formed between these slits. These strips have their upper ends folded out. 3 is a mushroom-shaped packing made of soft metal, lead for examplehaving a projection 4 in its centre. This projection has, in turn, a hole 5 l passing through its centre, and its top conically shaped so as tobeeasily deformable. Into the open end of the said tubular body i, the centre projection 4 of the packing 3 is inserted, so that the disc or head of the packing 3 overlaps the folded-out ends of the strips 2. The head end of the tubular body I has a ring-shaped disc 6 passed upwards until it reaches the lower surface of the folded-out ends of the strips 2. In order to hold the packing 3, the folded-out ends of the 25 strips, and the ring-shaped disc 6 tightly together to form a unit, they are enclosed by a cap 8 having a hole I therethrough so as to conform with the hole 5 of the packing 3, whereby the top or head 9 is made up. 30

A stem I0 is studded on the bottom of the tubular body I. This stem is passed through the centre holes of the packing 3 and of the cap 8, projecting above the top 9 of the leakage-stopper and formed with a globular grip H at its upper 35 end. The tubular body I has a washer l2 made of soft material, felt for example, passed upwards until it reaches the lower surface of the top 9. Bothedges of each of the strips 2 have incisions l4 positioned a little nearer to the inner 40 surface of the hose than the half of the length of the longitudinal slits on the tubular body I when the body is fully inserted into the hole in the hose. These incisions cause the strips to be weaker than the remaining part of the strips, so that, when the strips are folded, they become bent and doubled u with certainty, at the incisions. However, such weakening incisions are not absolutely needed, for grooves or shallow notches running latitudinally along the inner surface of the strips may be made, instead of the incisions, so as to make that part thinner.

A leakage-stopper constructed as above described is used by first having its tubular body I inserted into the hole in the hose I3. If the hole 2 is too small to be inserted direct with the tubular body, it is enlarged into a required size by means of a knife or an awl to get ready for receiving the tubular body. After the tubular body has been fully inserted into the hole, the stem is pulled out holding in hand the globular grip II at its upper end, and according as the stem is pulled out, the strips 2 spread open and bent outwardly from the weak part [4 in the middleas shown in Fig. 3. When the stem is so pulled out to nearly the full extent of its length as not to allow it to come out any more, it is cut off close to the top 9 as shown in Fig. 4. The whole operation results,

as shown in Fig. 5 which is aplan of the leakagestopper when viewed from the inner surface of hose, in the strips 2 being burst open, bent and doubled up, in the shape of a cross, on the inner surface of the hose. As the incisions N, that is, the weaker part of the strips, are positioned a little nearer to the inner surface of the hose. than the half of nal slits on the tubular body, each of the bended and doubled up-stripsgets slightly curled upat the end of the longer half in such a manner that the hooked end bites into the hose from inside, so that that part of hose round the "hole, along with the washer I2, is held tightly together between the top 9 and the bended cross-shaped strips. As the top of the centre projection for the packing '3 is conically shaped, it is so pressed on by the bottom of the tubular body I as to be deformed, so that the clearance between the stem l0 and the inner surface of the perforated hole 5 of the projection of packing3 is filled up with the deformed packing, and consequently, the leakage of water is satisfactorily stopped.

A modification-of the leakage-stopper is shown in Figs. 6 to 8, in which the packing I5 is inserted into the bottom of the tubular body I, not in the top 9, and a stem Ill, loosely passing through the top 9, is screw-threaded, and has a nut 16 screwed on to its part projecting higher than the top 9. Further, the incisions 1'4, which are made on both sides in each -of the strips -2 of the tubular body I, thus forming the weak part of the strips, are so positioned a's'to be about in the middle of the distance between the inner surface of the hose and the lower end of the notches, when the tubular body is inserted into the hole in the hose. 7

When the tubular body of a leakage-stopper constructed as above is inserted into a hole in a hose previously enlarged to a required size, and its stem is pulled out, the tubular body becomes burst open, its strips being bent outwardly and doubled up, as shown in Fig. 8. These strips of this modification are thus bent and doubled up in a straight line as shown in Fig. -8, and not hooked as shown in Fig. 4, while that part of hose round the hole, along with the washer, is held tightly together between the top 9 and the bended cross-shaped strips. The top of the packing I5 is so pressed on as to be deformed, so that the clearance round the stem is filled up with the deformed packing, and consequently, the leakage of water is satisfactorily stopped. 'Then, the nut I8 screwed on to the stem i is turned down as far as it comes on the top, when that part of the stem projecting beyond the position of the nut is cut off. Thusythe stem fixedly remaining in its screwed-up position the power of holding tightly together thatpart of hoseround the hole between the bended cross-shaped'strips and the top is not liable to become decreased, and consequently,

"against one another or against other the length of the longitudino leakage of water owing to the relaxing of the holding power would take place.

The leakage-stopper shown in Figs. 9 and 10 is similar to the one shown in Figs. 1 to 5, but having the lower half of the tubular body I conically shaped, that is, the strips 2 are so constructed as to be divided in two in the middle by the incisions M, which are made on both sides in each of them as a border line, the upper part having same width and the lower part being tapered.

The use of this second modification of the leakage-stopper is just the same as that of the one shown in Figs. 1 to 5, except that its body can be inserted more easily into a comparatively small hole in the hose. The lower half of its body being conically shaped, it has the advantages of the strips not bending inwardly even when struck things during transit,=and further, of the lower half on the strips not failing to be forced out obliquely, when the stem is pulled out, so that thestrips become at all times burst open, bent and doubled up, with utmost certainty and ease, pressing hard upon the inner surface of the hose.

Figs. 11 and 12 show a leakage-stopper as shown by the Figs. 1 to 5, having been attached to its tubular body 5 with an awl I1 for enlarging a hole in a hose. While every leakage-stopper as shown by Figs. '1 to '10 needs the help of a knife or an awl for enlarging the hole in hose to allow the tubular body to be inserted therein, when the hole is small, this leakage-stoppereliminates the use of a knife or an awl for such purposes. This awl I! has such -a construction that its upper half, being of a-tubu'lar form, allows the lower half of the tubular body I, that is, up to the weak part of the strips, to 'be inserted thereinto, and then these two are stuck hard by rial such as gypsum l8 or like material, and that its tubular upper half is provided with notches l9 corresponding with the notches in the tubular body I, and further, that its lower half is of polygonal cross-section with sharp edges 20.

To use this leakage-stopper, first the tip of the awl ll is put into the hole in hose, and then the remainingpart of it is forced into the hole, while that part-of hose round the hole is cut open by the sharp edges large enough to admit the awl. Upon the tubularbody I being wholly pushed into the hole, the stem to is pulled out, when the tubular body 1 becomes burst open as also those parts between the notches 19 in the tubular upper half of the awl, and the plastered part of the awl gets loosened, so that the awl splits off and is carried away by the water-flow in the hose. The rest of operation of this leakage-stopper is exactly the same aspreviously mentioned, that is, that part of hose round the hole is held tightly together between the top 9 and the bended and doubledup strips, while the packing 3 gets deformed and fills up tightly the clearance round the stem In so as to stop the leakage of water.

What I claim is:

1. A leakage stopper for a hose consisting of a longitudinally slit tu 'ular body joined at the base, spread apart at the top end and provided with incisions at the slit edges about midway between the ends, a separate head member en-' gaging the top ends of the tubular body and provided with an axial bore, a stem fitting loosely in said bore and in said tubular body and projecting at both ends thereof, a stud formed at the base end of said stem engaging the base of the tubular body, whereby when a pull is exmeans of plastering mate-- erted at the top end ofv the stem said tubular body is collapsed outwardly at the incision portion causing the top and base to impinge the hose.

2. A leakage-stopper for a hose in accordance with claim 1 in which a packing member is inserted between the head member and the top end of said tubular body and a cap over said head member adapted to firmly connect the top member, the packing member and the top ends of said tubular body.

3. A leakage-stopper for a hose in accordance with claim 1 in which a filling member is inserted at the base of said tubular member.

4. A leakage stopper for a hose consisting of a longitudinally slit tubular body joined at the base, spread apart at the top end and provided with incisions at the slit edges about midway between the ends, a. separate head member engaging the top ends of the tubular body and provided with an axial bore, a stem fitting loosely the tubular body, whereby when a pull is exerted at the top end of the stem said tubular body is collapsed outwardly at the incision portion causing the top and the base to impinge the hose, and means for seeming the stem in drawn out position.

5. A leakage-stopper for a hose in accordance with claim 4 in which a packing member is inserted between the head member and the top end of said tubular body and a cap over said head member adapted to firmly connect the top member, the packing member and the top ends of said tubular body; said securing means consisting of a nut threaded on the top end of said stem.

EIZO TAMADA. 

